Geometric solid set is made of transparent acrylic or lightweight ABS, and includes more than ten standard solids such as balls, columns, cones, platforms, cubes, etc. The side length is uniform and the color is distinguished. It can be filled with water or sand to demonstrate the volume ratio. The surface can be unfolded into a mesh diagram, with built-in magnetic strips for easy splicing and combination, visually displaying cross-sections, symmetries, rotating bodies, and Euler formulas. Equipped with protractors, scale stickers, and projection films, it supports teaching of "graphics and geometry" from primary school to high school. Teachers can demonstrate on bulletin boards and students can conduct group experiments to achieve a seamless transition from stereoscopic perception to abstract reasoning.